Slip ring cooling devices for electrical rotary machines

Details Slip ring cooling devices for electrical rotary machines Slip ring cooling devices for electrical rotary machines

1980-05-29

1982-06-08

Truhe, J. V.

Electrical generator or motor structure

Dynamoelectric

Rotary

310227, 310232, H02K 928

Patent

active

043341594

ABSTRACT:
A slip ring cooling device for electrical rotary machine comprises a plurality of closed chambers axially extending in the peripheral portion with intervals therebetween in the peripheral direction, and an annular passage at one side. The closed chambers each are defined by the surfaces of holes made in the slip ring so as to axially extend at the peripheral portion of the slip ring. The axially extended holes have open ends and closed ends. The annular passage is fluidly connected to each of said open ends so that said closed chambers communicate with said annular passage. A volatile liquid poured in said passage is distributed uniformly to each of said closed chambers by centrifugal force applied thereon upon the rotation of the slip ring. The distributed liquid is evaporated by the slip ring and brushes contacting the slip ring to form vapor. The vapor is transferred to the lower temperature portion by the pressure difference to be cooled and condensed, whereby the slip ring is cooled.

REFERENCES:
patent: 3526794 (1970-09-01), Glider et al.
patent: 3784855 (1974-01-01), Motegi et al.

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